I want to add a filter or an action for the plugin, the purpose is to set the value to "0" if the order used "myCRED" gateway.
I found those 2 related filters of the plugin,
uap_filter_referral_amount
uap_public_filter_on_referral_insert_amount_value
actually, I am not sure which one should I use, but I tried both of the 2 filters, when checkout it shows internal error, I think the code may have some error, any one can help?
Here is the code I have tried:
function exclude_mycred_gateway( $order ){
$payment_title = $order->get_payment_method_title();
if ( $payment_title ) {
$payment_title == "myCRED";
return "0";
}
}
add_filter( 'uap_filter_referral_amount', 'exclude_mycred_gateway');
